The Heising-Simons Foundation
Grantmaking foundation in Los Altos, California · EIN 26-0799587
- California
- Los Altos
- Philanthropy, Voluntarism and Grantmaking Foundations
- Philanthropy, Voluntarism and Grantmaking Foundations in California
- Grants itemized on the 990
- $210MTax year 2024
- Grants made
- 446Tax year 2024
- Total assets
- $870MLatest reported
- Latest IRS filing
- 2024Form 990 / 990-PF
Mission
FOR 51 PEGASI B SCIENCE SUMMIT EXPENSES
Giving by year
Totals by tax year, rounded to two significant figures. Years without a reported total show the sum of grants itemized on the filing.
Top recipients
| Recipient | Amount | Tax year |
|---|---|---|
| Environmental Defense Fund Inc | $6.3M | 2024 |
| Regents of the University of California at Berkeley | $4.8M | 2024 |
| California Institute of Technology | $4.6M | 2024 |
| Arizona Board of Regents University of Arizona | $4.1M | 2024 |
| Natural Resources Defense Council | $3.7M | 2024 |
Amounts are rounded. The full grantee list (446 grants in 2024) is available with a free account.
Website: www.hsfoundation.org
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Source: IRS Form 990 and 990-PF filings, tax year 2024. Also see this organization on ProPublica Nonprofit Explorer.